Clotted blood tube (Clot activator tube) (in ice bath)

Minimum blood volume: 6 mL

Paediatric clotted blood tube (in ice bath)

Number of vials: 2

Minimum blood volume: 1.6 mL

(Reserved test for restricted users or reflex test for indicated case)

Precaution

Send in ice without delay.

Reference interval

1.1- 4.4 µg/L (Fasting)

(Source: from manufacturer's kit insert)

Footnote:
C-Peptide level depends on factors such as pancreatic reserve, plasma glucose, state of fasting, etc. Please interpret C-Peptide with concurrent glucose and insulin results.

To differentiate endogenous or exogenous source of hyperinsulinism in hypoglycemia.

To assess pancreatic beta cell function and to distinguish type 1 from type 2 diabetes.

For insulin-mediated hypoglycemia, inappropriately high levels of insulin and C-peptide during hypoglycaemia indicate endogenous hyperinsulinism, while inappropriately high levels of insulin with low C-peptide during hypoglycaemia indicate exogenous hyperinsulinism.

Patients with type 1 diabetes would have low C-peptide, while type 2 diabetes would have detectable C-peptide.